The document discusses why we have years, days, and seasons on Earth. The Earth orbits the sun in 365 days, which makes up one year. The Earth spins on its axis once every 24 hours, creating day and night. Seasons occur because the Earth is tilted on its axis as it orbits the sun, causing different parts of the Earth to receive more or less sunlight throughout the year.

1. Why do we have years, days and seasons?

3. Earth orbits the sun in how many days?
What is an orbit?

4. 365 days
A year
One orbit around the sun
583,000,000

5. mercury – 4x yr
pluto 248 years

6. What is a spin?
Why is there light during the day and dark at night?

8. Why do we have seasons?

12. Draw: Name:
YEAR – the earth’s ORBIT around the sun
ONE DAY – the earth’s spin and the sun
SEASONS – the earth at a tilt and the sun